Rapid changes to the climate of the boreal zone have resulted in large-scale 'greening' and range shifts. Feng and others explain these changes at a global scale and with unprecedented spatial and temporal resolution, demonstrating a change in boreal forest demography toward younger stands, an increase in areal extent of boreal forests, and a northward gain that outpaced losses on it southern fringe. These ongoing changes further emphasize the importance of boreal forests to earth system processes and the work in the present manuscript presents a path forward for detailed studies of large-scale land cover changes.

This study uses carefully designed laboratory experiments to explore the potential of cement and lime kiln dust as feedstocks for ocean alkalinity enhancement, providing new insights into their capacity to enhance CO₂ uptake and counteract ocean acidification. By quantifying dissolution kinetics, alkalinity release, and potential carbon dioxide removal, the authors highlight both the promise of these widely available industrial by-products and the limitations associated with scalability and environmental impacts. Importantly, the work offers a balanced assessment of the benefits and risks of kiln dust deployment, making it highly relevant to the scientific community and to broader discussions on viable and responsible carbon dioxide removal strategies.

This study examines how a major tropical wetland influences carbon exchange with the atmosphere. High-resolution CO₂ flux data from the Pantanal revealed a pattern in net ecosystem exchange that hints at an internal stabilising process in the carbon cycle of these wetlands. The work helps address a major observational gap in one of the most important yet least monitored floodplains. By applying advanced time-series methods to a uniquely detailed dataset, the study offers a framework that can be used widely in climate and ecosystem research. The findings are especially timely and relevant in view of current discussions about global carbon budgets and climate resilience.